Linux Mail Server Setup and Howto Guide

Problem:

Every email clients works, starting from telnet. Only "Microsoft outlook express" doesnt, what it does is, it download email from my server and then in client doesnt show up. "like there is no emails he found or even downloaded".

Please guide……, recently i stoped pop3 service, not to lose emails.

Tools followed:

i used this http://www.linuxmail.info/inst…..-centos-5/

My system:

Centos 5.4 on Rack mounted server (64 bit)
[root@www new]# dovecot –version
1.0.7
[root@www new]#

Setup i have:

[root@www new]# dovecot -n
# 1.0.7: /etc/dovecot.conf
login_dir: /var/run/dovecot/login
login_executable(default): /usr/libexec/dovecot/imap-login
login_executable(imap): /usr/libexec/dovecot/imap-login
login_executable(pop3): /usr/libexec/dovecot/pop3-login
mail_location: maildir:~/Maildir/
mail_executable(default): /usr/libexec/dovecot/imap
mail_executable(imap): /usr/libexec/dovecot/imap
mail_executable(pop3): /usr/libexec/dovecot/pop3
mail_plugin_dir(default): /usr/lib64/dovecot/imap
mail_plugin_dir(imap): /usr/lib64/dovecot/imap
mail_plugin_dir(pop3): /usr/lib64/dovecot/pop3
imap_client_workarounds(default): delay-newmail outlook-idle netscape-eoh
imap_client_workarounds(imap): delay-newmail outlook-idle netscape-eoh
imap_client_workarounds(pop3): outlook-idle
pop3_client_workarounds(default):
pop3_client_workarounds(imap):
pop3_client_workarounds(pop3): outlook-no-nuls oe-ns-eoh
auth default:
  username_format: %Lu
  passdb:
    driver: pam
  passdb:
    driver: sql
    args: /etc/dovecot-mysql.conf
  userdb:
    driver: passwd
  userdb:
    driver: static
    args: uid=501 gid=501 home=/home/vmail/%u
[root@www new]#

I have this already..

/etc/dovecot.conf:

        protocol pop3 {

                pop3_uidl_format = %08Xu%08Xv                pop3_client_workarounds = outlook-no-nuls oe-ns-eoh

        }

but when i use dovecot -n, it doesnt show that line? should i put that line out side from the  second brackets?

I loged in to client pc, using outlook express 2007 which getting failed

- then i installed eudora and stop ttls

- its an TLS/SSL problem certification problem.

How can validate the pop3 to get success for SSL? (secure sockets when receiving, while clients using TLS).